Part 2 of the way awesome, and nice to look at, Tortoise anatomy lesson!
Tortoises: An Anatomy Lesson (Bones and Beaks)
The last set of bones and a quick blurb about beaks. When a tortoise is flipped it has difficulty breathing (more on that later) and it gets confused, but it can typically use its head and paws to get back on its feet with a little effort.